Numerical Simulation Research on Pressure Probe

. This article presents an investigation on the flow characteristics of the air in complex probe. The flow fields around the complex probe in different Mach numbers is simulated to analysis the relation between flow field structure and text parameters. The investigation on complex probe shows that the Mach numbers has influence on the characteristic of complex probe. The flow field around the probe and shock wave distribution transform with the change of Mach number. The calibrate coefficient has disparate transformation law in subsonic speed flow field, near-sonic speed flow field and supersonic speed flow field.